H-factor
The most unattractive girl in a group of hot girls. The others pick her to feel better about themselves. She’s usually the one who makes the group look worse, but that’s the point.
She’s the H-factor, and she’s the reason the group looks like a disaster.
They brought the H-factor in so they could all look better.
She’s the H-factor, and she smells like a landfill.